text: # Copyright (C) 2018-2021 Intel Corporation
  # SPDX-License-Identifier: Apache-2.0
  
  import unittest
  
  import numpy as np
  
  from openvino.tools.mo.front.AttributedClampNormalizer import AttributedClampNormalizer
  from openvino.tools.mo.utils.ir_engine.compare_graphs import compare_graphs
  from unit_tests.utils.graph import build_graph, const
  
  nodes_attributes = {
      'placeholder': {'shape': None, 'type': 'Parameter', 'kind': 'op', 'op': 'Parameter'},
      'attr_clamp': {'type': 'Clamp', 'kind': 'op', 'op': 'AttributedClamp', 'name': 'attr_clamp',
                     'min': np.array(-3.5, dtype=np.float32), 'max': np.array(3.5, dtype=np.float32)},
      'result': {'type': 'Result', 'value': None, 'kind': 'op', 'op': 'Result'},
  
      # new Clamp layer and inputs
      'clamp': {'type': None, 'kind': 'op', 'op': 'Clamp'},
      **const('min', np.array(-3.5, dtype=np.float32)),
      **const('max', np.array(3.5, dtype=np.float32)),
  }
  
  
  class AttributedClampNormalizerTest(unittest.TestCase):
      def test_1(self):
          graph = build_graph(nodes_attributes,
                              [('placeholder', 'attr_clamp', {'in': 0, 'out': 0}),
                               ('attr_clamp', 'result', {'in': 0, 'out': 0}),
                               ],
                              {}, nodes_with_edges_only=True)
  
          graph_ref = build_graph(nodes_attributes,
                                  [('placeholder', 'clamp', {'in': 0, 'out': 0}),
                                   ('min', 'clamp', {'in': 1, 'out': 0}),
                                   ('max', 'clamp', {'in': 2, 'out': 0}),
                                   ('clamp', 'result')
                                   ],
                                  {}, nodes_with_edges_only=True)
  
          graph.graph['layout'] = 'NCHW'
          graph.stage = 'front'
  
          replacer = AttributedClampNormalizer()
          replacer.find_and_replace_pattern(graph)
  
          (flag, resp) = compare_graphs(graph, graph_ref, 'result', check_op_attrs=True)
          self.assertTrue(flag, resp)
          self.assertTrue(graph.node[graph.get_nodes_with_attributes(op='Clamp')[0]]['name'] == 'attr_clamp')
  